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Ship collision analysis with a floating offshore fish farm

Abstract

Due to limited nearshore areas and great impact to local ecosystems, the aquaculture industry is moving the fish farms from nearshore to more exposed sea regions where waves and current are stronger. Like other offshore installations operating at sea, fish cages are also exposed to the risk of collisions from attendant or visiting vessels. This paper evaluates the structural strength of a fish farm concept subjected to supply vessel collisions by the use of nonlinear finite element simulations. The fish cage is made of ring-stiffened columns and supporting braces. A 7500-ton supply vessel is used as the striking vessel. Several collision scenarios with both coupled and decoupled methods are simulated on representative impact locations. The results are discussed with respect to the impact resistance, energy and structural damage.
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Category

Academic chapter

Language

English

Author(s)

  • Zhaolong Yu
  • Jørgen Amdahl
  • David Kristiansen

Affiliation

  • SINTEF Ocean / Aquaculture
  • Norwegian University of Science and Technology

Year

2019

Publisher

CRC Press

Book

Trends in the Analysis and Design of Marine Structures: Proceedings of the 7th International Conference on Marine Structures (MARSTRUCT 2019, Dubrovnik, Croatia, 6-8 May 2019)

ISBN

9780367278090

Page(s)

238 - 245

View this publication at Norwegian Research Information Repository